com.ibatis.common.jdbc.logging.ResultSetLogProxy Maven / Gradle / Ivy
/*
* Copyright 2004 Clinton Begin
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.ibatis.common.jdbc.logging;
import com.ibatis.common.beans.ClassInfo;
import com.ibatis.common.logging.Log;
import com.ibatis.common.logging.LogFactory;
import java.lang.reflect.InvocationHandler;
import java.lang.reflect.Method;
import java.lang.reflect.Proxy;
import java.sql.ResultSet;
/**
* ResultSet proxy to add logging
*/
public class ResultSetLogProxy extends BaseLogProxy implements InvocationHandler {
private static final Log log = LogFactory.getLog(ResultSet.class);
boolean first = true;
private ResultSet rs;
private ResultSetLogProxy(ResultSet rs) {
super();
this.rs = rs;
if (log.isDebugEnabled()) {
log.debug("{rset-" + id + "} ResultSet");
}
}
public Object invoke(Object proxy, Method method, Object[] params) throws Throwable {
try {
Object o = method.invoke(rs, params);
if (GET_METHODS.contains(method.getName())) {
if (params[0] instanceof String) {
if(rs.wasNull()) {
setColumn(params[0], null);
} else {
setColumn(params[0], o);
}
}
} else if ("next".equals(method.getName()) || "close".equals(method.getName())) {
String s = getValueString();
if (!"[]".equals(s)) {
if (first) {
first = false;
if (log.isDebugEnabled()) {
log.debug("{rset-" + id + "} Header: " + getColumnString());
}
}
if (log.isDebugEnabled()) {
log.debug("{rset-" + id + "} Result: " + s);
}
}
clearColumnInfo();
}
return o;
} catch (Throwable t) {
throw ClassInfo.unwrapThrowable(t);
}
}
/**
* Creates a logging version of a ResultSet
*
* @param rs - the ResultSet to proxy
* @return - the ResultSet with logging
*/
public static ResultSet newInstance(ResultSet rs) {
InvocationHandler handler = new ResultSetLogProxy(rs);
ClassLoader cl = ResultSet.class.getClassLoader();
return (ResultSet) Proxy.newProxyInstance(cl, new Class[]{ResultSet.class}, handler);
}
/**
* Get the wrapped result set
* @return the resultSet
*/
public ResultSet getRs() {
return rs;
}
}